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Patterned media
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<p>Patterned media (also known as bit-patterned media or BPM) is a potential future <a href="/facts/Hard_disk_drive/kekLSGSE">hard disk drive</a> technology to record data in magnetic islands (one bit per island), as opposed to current hard disk drive technology where each bit is stored in 20–30 magnetic grains within a continuous magnetic film. The islands would be patterned from a precursor magnetic film using <a href="/facts/Nanolithography/lEmvukHt">nanolithography</a>. It is one of the proposed technologies to succeed <a href="/facts/Perpendicular_recording/K9nY3eS5">perpendicular recording</a> due to the greater storage densities it would enable. BPM was introduced by <a href="/facts/Toshiba/QHRaw8Tr">Toshiba</a> in 2010. </p>